Example: Can be set per input
filebeat.inputs:
- type: filestream
  id: my-filestream-id
  enabled: true
  paths:
    - /var/log/*.log
  fields_under_root: true
  fields:
    data_stream.type: logs
    data_stream.dataset: my.app
    data_stream.namespace: prod
    event.dataset: my.app
setup.ilm.enabled: false
setup.template.enabled: false
# setup.template.settings:
#   index.number_of_shards: 1
setup.kibana:
output.elasticsearch:
  hosts: ["http://localhost:9200"]
  index: "%{[data_stream.type]}-%{[data_stream.dataset]}-%{[data_stream.namespace]}"